Use Instruction

16
Warranty Card
Please fill in the warranty card carefully and send it to the after-sales service center of Shenzhen Yanshang Technology Co., Ltd. for
registration within one week. During the warranty period, if you need technical advice or the instrument fails (human errors and
accidents do not belong to this category), please contact the after-sales service center. Products beyond the warranty period or users
with special service requirements are welcome to consult the after-sales service center of Shenzhen YASUN Technology Co., Ltd.
Personnel who are not authorized and trained by the company are not allowed to start the machine for maintenance.
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